Time switch



July. 19, 1932. ALBERT|N| 1,868,086

TIME SWITCH Filed May 11, 1931 A TTORN E Y.

Patented July 19, 1932 UNITED STATES ERNESTO ALBERTINI, OF CHIGAG'Q-ILLINOIS 7 TIME SWITCH Application filed May 11, 1931.

This invention relates to time switches and more particularly to a device for closing and opening a circuit to an electric lamp, electric heating devices and the like.

One of the objects of the present invention is the provision of a device of the above character, which is adapted to be operated by the hour hand of a clock.

Another object is the provision of a pair of switches which are adapted to be arranged in adjusted positions on the periphery of a clock dial in spaced relation to each other, one of the switches being adapted for closing and the other to opening an electric circuit. I

Another object is the provision of a clock having a plurality of contact rings mounted in the clock dial, and a pair of switches which may be adjusted at various positions on the periphery of the dial, and which are adapted for operation by the hour hand of the clock for closing and opening an electric circuit.

With these and other objects in view, the invention will be better understood in the course of the following description.

I attain the objects and secure the advantages of my invention by means illustrated in the accompanying drawing, in which Figure 1 is an elevational view of my device.

Figure 2 is a detail section taken on the line 22 of Figure 1.

Figure 3 is a detail section taken on the line 33 of Figure 1.

Figure 4 is a section taken on the line 44 of Figure 2.

Figure 5 is a section taken on the line 55 of Figure 3, and

Figure 6 is a diagrammatic view of the electric circuit.

Similar reference characters designate similar parts throughout the several views.

In the drawing 1 indicates a clock having the usual dial 2, minute hand 3, and hour hand 4.

The dial 2 in the present instance is shown as a disk of insulating material 5 on which are formed the shoulders 6 and 7 to form a guide ring 8.

Formed in the dial 2 are a plurality of Serial No. 536,502.

grooves 9 in which-are arranged the contact rings 10, 11, and 12. Achannel slide '13 of a switch 14 is slidably connected to the guide ring 8 and has attached thereto as at 15 a spring guide 16.

The switch 14 further comprises a pair of insulating plates 17 and 18 between which is pivotally arranged a pivot latch 19, which has attached on one side as at 20, a finger 21. The finger 21 is adapted to lie in the path of travel of the hour hand 4.

Formed on the side opposite to that on which the finger 21 is arranged, is formed an arm 22, at the upper end thereof, which has attached to its under face a tapered bridge.

Attached to the lower plate 18 as'at 24, are the spaced contacts 25 and 26, which comprise U shaped portions 27 having one end 28 curved upwardly whereby to abut the bridge 23, and the other end 29 curved downwardly to abut the rings 10 and 11 respectively.

Pivotally carried between the insulating plates 30 and 31 of a second switch 14,, is a pivot latch 19, to which is fixed a finger 21 similar in construction to the finger 21 and which is also adapted to lie in the path of the hand 4. I

Attached to the inner face 32 of 30 is a bridge 33.

Attached to the lower plate 31 is a pair of contacts 34 and 35 similar in construction to the contacts 25 and 26 which are normally spaced from the bridge 33 by the tapered arm 36, of insulating material formed on the upper end of the pivot latch 19.

A channel guide 13 on which is formed a stud 50 is inserted through perforations in the spacer 51 and the plates 30 and 31 and locked in position by the nut 52.

At 37 are shown slots in the ring 8 through which the L shaped arms 38 and39 of the the plate slides 13 and 13 are inserted. The switches 14 and 14 may then be moved to any de sired position on the dial 2, the springs 16 Q; and 16 serving to hold the switches 14 and 14 in place, and the lips 40 and 40 of the slides 13 and 13 being in abutment with faces 41 and 41 to prevent outward radial movement.

In Figure 6 is shown a'diagram of an elec- 'minal of a lamp 42.

tric circuit with my device connected up with an electric lamp,

As shown, a lead 44 has one end connected to the negative side of a source of power 45, and the other end connected to the ring 10.

A lead 46 has one end connected to the ring 12, and the other end connected to one ter- The lead 47 has one end connected to the other terminal of the lamp 42, and the other end connected to the positive side of the source of power 45.

As shown the switch 14 is open with the contacts 34 and 35 in engagement with the rings 11 and 12 respectively, and the switch 14 is closed with the contacts 25 and'26 are in contact with the rings 10 and 11 respectively. I

When it is desired that the circuit to the lamp 42 be closed at, for instance four oclock and the circuit opened at five oclock, the switches 14 and 14 are set as shown in Figure 1:. I

When the hand 4 moves into engagement with the finger 21, further movement will rock the pivot 19' in the direction of the arrow 43', and move the arm 36, out ofengagement with the contacts 34 and 35 and allow the'ends 28 to spring into engagement with the bridge 33, thereby closing the switch 14 and completing a circuit to the lamp 42.

As the hand 4 continues its movement it comes in contact with the finger 21 and further movement of the hand 4 will move the finger 21 in the direction of the arrow 48 thereby rocking the arm 23 out of engage ment with the contacts 25 and 26 and opening the circuit to the lamp 42.

From the foregoing it will seem that the switches may beset to open and close an electric circuit at any desired time. 7

It is to be understood that various changes may be made in the details of construction of. my device without departing from the spirit of my invention or the appended claims,

, Having thus described the invention, what I claim is I. In combination with a clock mechanism 7 including a dial and an hour hand, of a plurality of contact rings mounted on said dial, a pair of switches adjustably mounted on said dial, said switches having a pair of contacts adapted for engagement with certain of said rings, a pivot latch carried by one of said switches and adapted for operation by said hand whereby to close an electric circuit, and a pivot latch carried by the other of said switches adapted for operation by the hour hand for opening an electric circuit at predetermined times.

2. In combination with a clock mechanism including a dial and an hour hand, of a plurality of conducting rings mounted in said dial, a switch adjustably mounted on. said dial, said switch having a pair of contacts adapted for engagement with certain of said rings, a pivot latch carried by said switch, a bridge mounted on said switch and normally spaced from said contacts by said latch, said pivot adapted for operation by said hand whereby to allow said contacts to engage said bridge, a second switch having a pair of contacts adapted for engagement with certain of said rings, a pivot latch carried by said second mentioned switch, said latch having a bridge normally in contact with the contacts of said second mentioned bridge, said latch adapted for operation by said hand whereby to disengage second mentioned bridge from said second mentioned pair of contacts, and whereby a circuit. may be closed and opened at predetermined times.

In witness whereof I have hereunto set my hand, this 31st day of March, A. D. 1931.

ERNESTO ALBERTINI. 

